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DTC Description
 
 
DTC DETECTION LOGIC
DTC No. M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
B1F00–49ANC UNIT
(Active noise control unit)
Diagnosis conditionWhen ignition switch is ON
Signal (terminal)—
ThresholdBOSE speaker amp. malfunction
Diagnosis delay time30 seconds or more
 
 
POSSIBLE CAUSE
BOSE speaker amp.
 
 
FAIL-SAFE
Amplifier function is stopped.
 
 
CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With M.U.T.-III SE
  1. Turn ignition switch ON.
  2. Turn ignition switch OFF and wait for 4 minutes.
  3. Turn ignition switch ON and wait at least 1 minute or more.
  4. Select “Self Diagnostic Result” mode of “Audio amp.” using M.U.T.-III SE.
  5. Check DTC.
Is DTC B1F00–49 detected?
Proceed to Diagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END